Study Guide: Chemical, Physical, and Phase Changes Test

Front

What is condensation?

Back

Condensation is the process where a gas turns into a liquid, often seen when water vapor cools and forms droplets.

Front

What is sublimation?

Back

Sublimation is the process of changing from a solid directly to a gas without passing through the liquid state.

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often indicated by changes in color, temperature, or the production of gas.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What are signs of a chemical change?

Back

Signs of a chemical change include change in color, production of gas (bubbles), formation of a precipitate, and change in temperature.

Front

What is evaporation?

Back

Evaporation is the process where a liquid turns into a gas, usually occurring at the surface of the liquid.

Front

What happens to heat during evaporation?

Back

During evaporation, heat is gained from the surroundings, which helps the liquid molecules to escape into the gas phase.

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid as it loses heat.

Front

What is melting?

Back

Melting is the process where a solid turns into a liquid as it gains heat.

Front

What is the difference between boiling and evaporation?

Back

Boiling occurs throughout the liquid at a specific temperature, while evaporation occurs only at the surface and can happen at any temperature.